Night terrors? What is this!?

So my husband and I sleep together during the night first off he’s the type to be up all night and I usually go to sleep around 9pm. Anyways first thing i noticed was the jaw clenching! I would hear him grinding his teeth. Second thing I’ll notice is like tremors on other nights. It’s like his body we’ll jerk and sometimes he’s not fully in a deep sleep. 3rd thing is I caught him maybe once jump up on his sleep and I asked what’s wrong? And he said nothing and went back to sleep. The fourth thing was last night. Which kinda bothered me. The way I was sleeping I had my hand above my head and he was sleep towards my directions he ended up jumping up (not fully just his head) to look at my hand and open my hand and asked if I had a sticker??? “Is that a sticker?” So he saw something clearly that wasn’t there????!!! Idk what this is???? What the heck does this sound like????